5850 voltage tweak help

[liamcrane]

Morning all happy easter im looking to start overclocking my new 5850 shown below
http://www.overclockers.co.uk/showproduct.php?prodid=GX-215-AS&groupid=701&catid=56&subcat=411

That was a couple of things i was not to sure on, can i tweak the voltage on this card using MSI Afterburner and if so how, also what is the default voltage for the card and the max voltage, its just i saw on the front of my box that you can tweak the voltage on it but there was now guide or software included showing me how.

I heard you can overclock these cards to 5870 speeds of 850/1200 (i think thats 5870 speeds correct me if im wrong) would you see noticable performance increase in OC the card in most games playing just cause 2 at the mo and get a steady 45-50fps.

Thanks everyone

 

[Feesh]

I have an Asus 5850 and use MSI Afterburner w/o any issues. The GUI is easy to use, simply use the sliders to select Voltage, Core Clock and Memory Clock. Stock volts for this card are 1.08v. I haven't used the ASUS software as I read MSI was superior.

I have mine OC'd to 950/1250 using 1.2v. You can also set up a fan profile using Afterburner to help with temperatures, very easy to do.

Temperatures are 30~ idle and on full stress test never hit 70. A 5 hour session of BFBC2 will only see my temps rise to 55~.

Below are my results from both 3DVantage and Heaven v2.0.

Vantage Performace mode -

Heaven v2.0 -

Hope this helps

 

[liamcrane]

Thanks mate thats helped a lot nice results you have there, did you have vsync enabled when you ran the tests cos you have quite high fps there

My temps on stock seem to be good i have set up a fan profile so when i hit 50c it goes to 40% and so far i idle at 34c and underload with just cause 2 with settings on high its never touched 50c, i understand overclocking it and upping the voltage will cause it to run warmer, do you know how far you can push a 5850 on stock voltage?

 

[hedgey]

i use 900/1200 at 1.1v

 

[Feesh]

No problem

I don't believe vsync was on when I ran the benchmarks. Will have to see what difference is made with it enabled.

As for maximum on stock volts, I havn't tested it personally but have read some people have managed 800/1200.

Good luck!